Chair frame



FIG. 1 is a perspective view of a chair frame in accordance with a preferred embodiment of the present invention;

FIG. 2 is a front view of the chair frame shown in FIG. 1;

FIG. 3 is a back view of the chair frame shown in FIG. 1;

FIG. 4 is a left side view of the chair frame shown in FIG. 1, with the right side being a mirror image thereof;

FIG. 5 is a top view of the chair frame shown in FIG. 1; and,

FIG. 6 is a bottom view of the chair frame shown in FIG. 1.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a chair frame, as shown and described. 